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2020 Vol.62, Issue 1 Preview Page
Spatio-Temporal Resolution Analysis based on Landsat/AMSR2 Soil Moisture

Landsat/AMSR2 기반 토양수분의 시공간적 해상도 분석

Taehwa Leea
,
Sangwoo Kimb
,
Myoungsoo Wonc
,
Keunchang Jangd
,
Yongchul Shine†
이 태화a
,
김 상우b
,
원 명수c
,
장 근창d
,
신 용철e†
aPh.D. Student, Department of Agricultural Civil Engineering, Kyoungpook National University
bMS Student, Department of Agricultural Civil Engineering, Kyoungpook National University
cSenior Researcher, Division of Forest Ecology and Climate Change, National Institute of Forest Science
dResearch Scientist, Division of Forest Ecology and Climate Change, National Institute of Forest Science
eProfessor, Department of Agricultural Civil Engineering, Kyoungpook National University
a박사 경북 대학교 농업 토목 공학과 학생
b경북 대학교 농업 토목 공학과 학사
c국립 산림과 학원 산림 생태 기후과 선임 연구원
d국립 산림 과학 연구소 산림 생태 기후과 연구원
e경북 대학교 농업 토목 공학과 교수
† Corresponding author Tel.: +82-53-950-5734 Fax: +82-53-950-6752 E-mail: ycshin@knu.ac.kr
2020. pp. 51-60
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Abstract

The purpose of this study is to determine the spatial and temporal resolutions that can represent land surface characteristics comprised of various land use using Landsat/AMSR2-based soil moisture data. We estimated the Landsat (30 m×30 m)-based soil moisture values using the soil moisture regression model. Then, the Landsat (30 m×30 m)-based soil moisture (reference values) were resampled to the relatively coarse resolutions from 1 km to 4 km, respectively. Comparing the reference values to the resampled soil moisture values, we confirmed that uncertainties were increased with the spatial resolutions of 2 km~4 km indicating that the spatial resolution of 1 km×1 km is required to represent the complicated land surface. Also, the AMSR2 soil moisture values have less uncertainties compared to SMAP data with the temporal resolution of 1~2 days. Thus, our findings can be useful for various areas such as agriculture, hydrology, forest, etc.

Keywords
Soil moisture
spatial and temporal resolutions
landsat
AMSR2
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 62
  • No :1
  • Pages :51-60
  • Received Date : 2019-10-30
  • Revised Date : 2019-11-28
  • Accepted Date : 2019-11-28
  • DOI :https://doi.org/10.5389/KSAE.2020.62.1.051
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